[Haskell-cafe] Template Haskell question?

Jeremy Shaw Jeremy.Shaw at lindows.com
Wed Feb 11 08:44:09 EST 2004


I had very similar problems due to bugs in 6.2 that are fixed in cvs head. If you build ghc out of cvs head that may fix your problem. If not, you can report the bug on the glasgow-haskell-bugs at haskell.org mailing list.

Jeremy Shaw.

On Feb 11, 2004 01:39 AM, Per Larsson <per at L4i.se> wrote:

> I have written a small TH application (module THRecord) which creates update 
> functions for records. It is intended to be used like this:
>     import THRecord
>     data Record = R {... 
>     ...
>     $(THRecord.generateRecordModifiers (reifyDecl Record))
> It works great, but only if the splice is placed last in the importing module! 
> If I place it in the middle of the module it seems to hide subsequent 
> declarations and I get 'Variable not in scope ...' compiler errors. If I 
> place it at the top of the module I get:
>     ghc-6.2: panic! (the `impossible' happened, GHC version 6.2):
>             nameModule Record {- tc 01D -}
> Has anybody a clue of what is happening here?
> -- Per
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